EP1052449A2 - Vehicle headlamp - Google Patents

Vehicle headlamp Download PDF

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Publication number
EP1052449A2
EP1052449A2 EP20000109700 EP00109700A EP1052449A2 EP 1052449 A2 EP1052449 A2 EP 1052449A2 EP 20000109700 EP20000109700 EP 20000109700 EP 00109700 A EP00109700 A EP 00109700A EP 1052449 A2 EP1052449 A2 EP 1052449A2
Authority
EP
European Patent Office
Prior art keywords
reflector
lens
brightening
headlight according
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20000109700
Other languages
German (de)
French (fr)
Other versions
EP1052449B1 (en
EP1052449A3 (en
Inventor
Franz-Josef Kalze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1052449A2 publication Critical patent/EP1052449A2/en
Publication of EP1052449A3 publication Critical patent/EP1052449A3/en
Application granted granted Critical
Publication of EP1052449B1 publication Critical patent/EP1052449B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
    • F21W2102/18—Arrangement or contour of the emitted light for regions other than high beam or low beam for overhead signs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/20—Illuminance distribution within the emitted light

Definitions

  • the invention relates to a headlight for vehicles with a bowl-shaped reflector, with a light source assigned to the reflector, with a lens arranged in the beam path of the reflector, which lens from the Reflector collects reflected light and a convex facing away from the reflector Has side, and with a screen surrounding the lens
  • Such a headlight for vehicles is known from DE 41 27 403 C2.
  • the Headlights have a plastic housing, the front Opening is completed by a translucent lens.
  • a light unit is arranged inside the housing and has an ellipsoidal shape Reflector, a lens and an aperture arranged between the lens and reflector having.
  • the light unit is used to generate a dimmed light.
  • the Lens is surrounded by a screen, which is held on the housing.
  • Such Visors are often on the side facing the lens with a reflective surface.
  • the screens shield the one hand View into the headlight interior and on the other hand they give it Headlights have a homogeneous, brilliant appearance.
  • the disadvantage here is that when the headlights are switched on, the active light emission only through the small one Dimensional lens is determined and thus perceived as dazzling becomes.
  • the headlight known from DE 197 04 4766 A1 there is between one ellipsoidal reflector and a lens an annular brightening reflector arranged.
  • the fill-in reflector directs light rays that come directly from a inner focal point of the reflector arranged light source emerge from the lens past. This means that when you look at the headlight appears at switched on light source not only illuminates its light source but also the additional brightening reflector, so that overall a larger area is illuminated is as the area of the lens and the subjective glare is reduced.
  • the brightening reflector between the lens and the ellipsoidal reflector the view of a holder supporting the lens, the Aperture and the light source located in the inner focal point of the reflector. So that the headlamp is homogeneous brilliant in this area too Appearance, the holder and the bezel must be elegantly designed and be provided with a reflective surface. Through this reflective Surface of the holder can dazzle the oncoming traffic arise.
  • the lens itself can be viewed as a light source / illuminant.
  • the projection of this light source represents an independent optical system (brightening of the surroundings through lens projection).
  • the reflector, the light source and the lens provide the main light beam.
  • the luminance generated from the brightening reflector (surrounding reflector) creates a low, homogeneous level of glare in the oncoming traffic area.
  • the oncoming driver therefore does not define the lens, but the entire surface of the lens and fill-in reflector as the light-active surface.
  • the prerequisite for a pleasant appearance for oncoming traffic is the homogeneity of the luminance distribution over the entire illuminating surface of the brightening reflector.
  • the headlight for vehicles has a light unit (15), which in one Headlight housing, not shown, is arranged.
  • the light unit (15) can be rigidly connected to the headlight housing or in the The headlight housing can be mounted so as to be adjustable about at least one axis.
  • the Light unit (15) has an ellipsoidal reflector (1), in the interior of which Burning location a light source (2) is arranged.
  • a light source (2) Incandescent lamp or a gas discharge lamp are used.
  • the lamp is in one in the Peak area of the reflector (1) introduced opening (16) and through a socket (17) is held on the reflector (1).
  • the lens (3) is over one Lens holder (18) connected to the front edge of the reflector (1).
  • the Lens (3) has a flat side (19) facing the reflector (1) and one Reflector (1) facing away from the convex side (4)
  • the ellipsoidal reflector (1) is provided on its front with a reflective surface (20) by a Freeform surface is determined.
  • the freeform surface cannot be mathematical Function are described, but is chosen freely.
  • From the light source (2) outgoing light rays (21) reflected by the reflector (1) produce a Main light beam (12) with one imaged by the aperture (14) Cut-off line (22).
  • the main light beam (12) can be symmetrical or serve asymmetrical low beam.
  • Light rays (21) run with respect to the optical axis (9) of the light unit (15) inclined downwards at an angle (a).
  • the lens (3) with its convex side (4) dips through one Receiving opening (24) of a paraboloid-shaped brightening reflector (5).
  • the brightening reflector (5) borders on the edge area of its receiving opening (24) convex side (4) of the lens (3) and is with this edge area on the Lens holder (8) attached.
  • Brightening reflector (5) is a reflection surface (6), which is a in each radial section paraboloidal line describes.
  • the paraboloid-shaped brightening reflector (5) has a focal area assigned to the lens (3), which in the inside and / or is arranged outside the lens (3).
  • the paraboloid-shaped brightening reflector (5) has at least one optical axis (23) which is parallel to the optical axis (9) of the light unit (15) runs.
  • the brightening reflector (5) shown in Figure 2 surrounds the lens (3) at a distance and is attached to the headlight housing, not shown.
  • the convex Side (4) of the lens (3) has a roughness in the micro area Parts of the light diffuse outwards, while other parts enter the lens totally reflect so that they come out on the other side of the lens.
  • This light components deflected by the lens (3) are those on the reflection surface (6) of the Lightening reflector (5) light rays (7), which a secondary light beam (13) produce.
  • the brightening reflector (5) shown in FIGS. 1 and 2 is thus to the light unit (15) aligned that its secondary light beam (13) at least for the most part is arranged above the main light beam (12). From the fill reflector (5) generated luminance levels do not create any disturbing effects for oncoming traffic Glare.
  • the headlight shows a pleasant for the oncoming traffic Appearance, since not only the lens (3) but also the lens (3) completely surrounding fill-in reflector (5) is illuminated.
  • FIG. 2 there is a circumferential line (8) on the convex side (4) of the lens (3) shown, through which optical axes (23) run, which together a Form a cylinder whose central axis coincides with the optical axis (9) of the light unit (15) coincides.
  • the optical axes (23) are from the paraboloid lines formed, which result in radial sections through the brightening reflector (5).
  • the brightening reflector (5) can be placed in a large screen of a headlight several light units can be integrated. Such screens are either on Headlight housing or a lens attached.

Abstract

The headlamp has a shell-shaped reflector (1), a light source (2) associated with the reflector, a lens (3) arranged in the light path of the reflector to collect light reflected from the reflector with a convex side (4) remote from the reflector and a stop enclosing the lens. The stop is in the form of a fill-in reflector (5) for collecting the light (7) from the light source that f encloses the lens and has a focal region associated with the lens.

Description

Die Erfindung bezieht sich auf einen Scheinwerfer für Fahrzeuge mit einem schalenförmigen Reflektor, mit einer dem Reflektor zugeordneten Lichtquelle, mit einer in dem Strahlengang des Reflektors angeordneten Linse, welche das von dem Reflektor reflektierte Licht sammelt und eine dem Reflektor abgewandten konvexe Seite aufweist, und mit einer die Linse umgebenden SichtblendeThe invention relates to a headlight for vehicles with a bowl-shaped reflector, with a light source assigned to the reflector, with a lens arranged in the beam path of the reflector, which lens from the Reflector collects reflected light and a convex facing away from the reflector Has side, and with a screen surrounding the lens

Eine solcher Scheinwerfer für Fahrzeuge ist aus der DE 41 27 403 C2 bekannt. Der Scheinwerfer weist ein aus Kunststoff bestehendes Gehäuse auf, dessen vordere Öffnung durch eine lichtdurchlässige Abschlußscheibe abgeschlossen ist. Im Inneren des Gehäuses ist eine Lichteinheit angeordnet, die einen ellipsoidförmigen Reflektor, eine Linse und eine zwischen Linse und Reflektor angeordnete Blende aufweist. Die Lichteinheit dient zur Erzeugung eines abgeblendeten Lichts. Die Linse ist von einer Sichtblende umgeben, die an dem Gehäuse gehaltert ist. Solche Sichtblenden sind häufig auf der der Abschlußscheibe zugewandten Seite mit einer reflektierenden Oberfläche versehen. Die Sichtblenden schirmen zum einen die Sicht in das Scheinwerferinnere ab und zum anderen verleihen sie dem Scheinwerfer ein homogenes brillantes Erscheinungsbild. Nachteilig hierbei ist, daß bei eingeschalteten Scheinwerfer der aktive Lichtaustritt nur durch die kleine Abmessungen aufweisende Linse bestimmt ist und somit als blendend empfunden wird.Such a headlight for vehicles is known from DE 41 27 403 C2. The Headlights have a plastic housing, the front Opening is completed by a translucent lens. in the A light unit is arranged inside the housing and has an ellipsoidal shape Reflector, a lens and an aperture arranged between the lens and reflector having. The light unit is used to generate a dimmed light. The Lens is surrounded by a screen, which is held on the housing. Such Visors are often on the side facing the lens with a reflective surface. The screens shield the one hand View into the headlight interior and on the other hand they give it Headlights have a homogeneous, brilliant appearance. The disadvantage here is that when the headlights are switched on, the active light emission only through the small one Dimensional lens is determined and thus perceived as dazzling becomes.

Trotz des objektiv sehr niedrigen Blendenniveaus solcher Scheinwerfer im Gegenverkehrsraum werden die hohen Leuchtdichten bei kleinen, scharf abgegrenzten leuchtenden Flächen duch den Gegenverkehr als störend empfunden. Diese subjektive Blendungsempfindung (psychologische Blendung) hängt von der Größe der leuchtenden Fläche ab. Bei gleicher Blendungsstärke am Auge des entgegenkommenden Fahrers werden kleine, leuchende Flächen (höhere Leuchtdichte) als wesentlich stärker blendend empfunden.Despite the objectively very low aperture level of such headlights in the Oncoming traffic, the high luminance levels are small, sharp delimited luminous surfaces are perceived as disturbing by oncoming traffic. This subjective glare sensation (psychological glare) depends on the Size of the illuminated area. With the same level of glare on the eye of the Oncoming drivers become small, luminous areas (higher Luminance) perceived as much more dazzling.

Bei dem aus der DE 197 04 4766 A1 bekannten Scheinwerfer ist zwischen einem ellipsoidförmigen Reflektor und einer Linse ein ringförmiger Aufhellreflektor angeordnet. Der Aufhellreflektor lenkt Lichtstrahlen, welche direkt aus einer im inneren Brennort des Reflektors angeordneten Lichtquelle austreten an der Linse vorbei. Dadurch erscheint bei einer Betrachtung des Scheinwerfers bei eingeschalteter Lichtquelle nicht nur dessen Lichtquelle beleuchtet sondern auch der zusätzliche Aufhellreflektor, so daß insgesamt eine größere Fläche beleuchtet ist als die Fläche der Linse und die subjektive Blendwirkung reduziert wird. Weiterhin ist wegen der Anordnung des Aufhellreflektors zwischen der Linse und dem ellipsoidförmigen Reflektors die Sicht auf einen die Linse tragenden Halter, die Blende und auf die im inneren Brennort der Reflektors angeordnete Lichtquelle frei. Damit der Scheinwerfer auch in diesem Bereich ein homogenes brillantes Erscheinungsbild aufweist, müssen der Halter und die Blende formschön gestaltet und mit einer reflektierenden Oberfläche versehen sein. Durch diese reflektierende Oberfläche des Halters können den Gegenverkehr blendende Störstrahlen entstehen.In the headlight known from DE 197 04 4766 A1 there is between one ellipsoidal reflector and a lens an annular brightening reflector arranged. The fill-in reflector directs light rays that come directly from a inner focal point of the reflector arranged light source emerge from the lens past. This means that when you look at the headlight appears at switched on light source not only illuminates its light source but also the additional brightening reflector, so that overall a larger area is illuminated is as the area of the lens and the subjective glare is reduced. Furthermore, because of the arrangement of the brightening reflector between the lens and the ellipsoidal reflector the view of a holder supporting the lens, the Aperture and the light source located in the inner focal point of the reflector. So that the headlamp is homogeneous brilliant in this area too Appearance, the holder and the bezel must be elegantly designed and be provided with a reflective surface. Through this reflective Surface of the holder can dazzle the oncoming traffic arise.

Aufgabe der Erfindung ist es, den im Oberbegriff beschriebenen Scheinwerfer für Fahrzeuge derart zu gestalten, daß bei eingeschaltetem Scheinwerfer eine aktive Lichtaustrittsfläche des Scheinwerfers wesendlich größer erscheint als die Lichtaustrittsfläche der Linse und trotzdem weder eine störende Blendung für den Gegenverkehr noch eine zusätzliche Lichtquelle notwendig ist. Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Sichtblende zusätzlich ein Lichtstrahlen der Lichtquelle sammelnder Aufhellreflektor ist, welcher vollständig die Linse umgibt und einen der Linse zugeordneten Brennbereich aufweist. Hierbei liefert die Linse nicht ausschließlich das projizierte Hauptlichtbündel sondern physikalische Effekte wie

  • diffus abgestrahlte Totalreflexionsanteile und
  • diffuse Anteile durch Brechung an der Oberflächen-Mikrostruktur.
The object of the invention is to design the headlamp for vehicles described in the preamble such that when the headlamp is switched on, an active light exit surface of the headlamp appears to be substantially larger than the light exit surface of the lens and yet neither a disturbing glare for oncoming traffic nor an additional light source is necessary. This object is achieved according to the invention in that the screen is additionally a brightening reflector collecting light rays from the light source, which completely surrounds the lens and has a focal area assigned to the lens. The lens does not only deliver the projected main light beam but physical effects such as
  • diffuse total reflection components and
  • diffuse parts due to refraction at the surface microstructure.

Dies führt dazu, daß die Linse selbst als Lichtquelle / Leuchtkörper angesehen werden kann. Die Projektion dieser Lichtquelle stellt ein eigenständiges optisches System dar (Umfeldaufhellung durch Linsenprojektion).
Der Reflektor, die Lichtquelle und die Linse liefern das Hauptlichtbündel. Die aus dem Aufhellreflektor (Umfeldreflektor) generierten Leuchtdichten erzeugen im Raum des Gegenverkehr ein niedriges, homogenes Blendungsniveau. Der entgegenkommende Fahrer definiert somit nicht die Linse, sondern die gesamte Fläche von Linse und Aufhellreflektor als lichtaktive Fläche.
Voraussetzung für ein für den Gegenverkehr angenehmes Erscheinungsbild ist die Homogenität der Leuchtdichtenverteilung auf der gesamten leuchtenden Fläche des Aufhellreflektors. Um eine ideale Homogenität der Leuchtdichteverteilung auf dem Aufhellreflektor zu erzielen, ist eine diffuse Reflexion aus jedem Oberflächenpunkt der Linse vorteilhaft. Diese "Normalen-Rauschen" kann durch eine Mikrorauhigkeit der Oberfläche oder durch Segmentierung, Facettierung, Hammerschlagstruktur usw. erreicht werden.This means that the lens itself can be viewed as a light source / illuminant. The projection of this light source represents an independent optical system (brightening of the surroundings through lens projection).
The reflector, the light source and the lens provide the main light beam. The luminance generated from the brightening reflector (surrounding reflector) creates a low, homogeneous level of glare in the oncoming traffic area. The oncoming driver therefore does not define the lens, but the entire surface of the lens and fill-in reflector as the light-active surface.
The prerequisite for a pleasant appearance for oncoming traffic is the homogeneity of the luminance distribution over the entire illuminating surface of the brightening reflector. In order to achieve an ideal homogeneity of the luminance distribution on the brightening reflector, a diffuse reflection from every surface point of the lens is advantageous. This "normal noise" can be achieved by a micro-roughness of the surface or by segmentation, faceting, hammered structure, etc.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung und den Zeichnungen, in denen zwei bevorzugte Ausführungsformen der Erfindung veranschaulicht sind.Further details of the invention emerge from the following Description and drawings in which two preferred embodiments of the invention are illustrated.

Die Zeichnungen zeigen

Figur 1:
einen vertikalen mittleren Längsschnitt durch einen Scheinwerfer für Fahrzeuge mit einer einen Reflektor, eine Blende und eine Linse aufweisenden Lichteinheit und einem die Linse umgebenden Aufhellreflektor, der an der Lichteinheit gehaltert ist.
Figur 2:
eine Seitenansicht auf eine Linse und einen die Linse mit Abstand umgebenden Aufhellreflektor
Figur 3:
eine prinzipielle Darstellung der Lichtbündel des Scheinwerfers im Verkehrsraum und
Figur 4:
eine prinzipielle Darstellung der Lichtverteilungen auf einem Meßschirm
The drawings show
Figure 1:
a vertical central longitudinal section through a headlight for vehicles with a light unit having a reflector, a diaphragm and a lens and a brightening reflector surrounding the lens, which is held on the light unit.
Figure 2:
a side view of a lens and a brightening reflector surrounding the lens at a distance
Figure 3:
a basic representation of the light beam of the headlight in the traffic area and
Figure 4:
a basic representation of the light distributions on a measuring screen

Der Scheinwerfer für Fahrzeuge weist eine Lichteinheit (15) auf, welche in einem nicht dargestellten Schweinwerfergehäuse angeordnet ist. Die Lichteinheit (15) kann starr mit dem Scheinwerfergehäuse verbunden sein oder in dem Scheinwerfergehäuse um mindestens eine Achse verstellbar gelagert sein. Die Lichteinheit (15) weist einen ellipsoidförmigen Reflektor (1) auf, in dessen innerem Brennort eine Lichtquelle (2) angeordnet ist. Als Lichtquelle (2) kann eine Glühlampe oder eine Gasentladungslampe dienen. Die Lampe ist in eine in den Scheitelbereich des Reflektors (1) eingebrachte Öffnung (16) eingesetzt und durch eine Fassung (17) an dem Refleketor (1) gehaltert. Die Linse (3) ist über einen Linsenhalter (18) mit dem vorderen Rand des Reflektors (1) verbunden. Die Linse (3) weist eine dem Reflektor (1) zugewandte plane Seite (19) und eine dem Reflektor (1) abgewandte konvexe Seite (4) auf Der ellipsoidförmige Reflektor (1) ist auf seiner Vorderseite mit einer Reflektionsfläche (20) versehen, die von einer Freiformfläche bestimmt ist. Die Freiformfläche kann nicht durch eine mathematische Funktion beschrieben werden, sondern ist frei gewählt. Die von der Lichtquelle (2) ausgehenden und von dem Reflektor (1) reflektierten Lichtstrahlen (21) erzeugen ein Hauptlichtbündel (12) mit einer durch die Blende (14) abgebildeten Hell-Dunkel-Grenze (22). Das Hauptlichtbündel (12) kann als symmetrisches oder asymmetrisches Abblendlicht dienen. Die aus der Linse (3) austretenden Lichtstrahlen (21) verlaufen gegenüber der optischen Achse (9) der Lichteinheit (15) in einem Winkel (a) geneigt nach unten.The headlight for vehicles has a light unit (15), which in one Headlight housing, not shown, is arranged. The light unit (15) can be rigidly connected to the headlight housing or in the The headlight housing can be mounted so as to be adjustable about at least one axis. The Light unit (15) has an ellipsoidal reflector (1), in the interior of which Burning location a light source (2) is arranged. As a light source (2) Incandescent lamp or a gas discharge lamp are used. The lamp is in one in the Peak area of the reflector (1) introduced opening (16) and through a socket (17) is held on the reflector (1). The lens (3) is over one Lens holder (18) connected to the front edge of the reflector (1). The Lens (3) has a flat side (19) facing the reflector (1) and one Reflector (1) facing away from the convex side (4) The ellipsoidal reflector (1) is provided on its front with a reflective surface (20) by a Freeform surface is determined. The freeform surface cannot be mathematical Function are described, but is chosen freely. From the light source (2) outgoing light rays (21) reflected by the reflector (1) produce a Main light beam (12) with one imaged by the aperture (14) Cut-off line (22). The main light beam (12) can be symmetrical or serve asymmetrical low beam. Those emerging from the lens (3) Light rays (21) run with respect to the optical axis (9) of the light unit (15) inclined downwards at an angle (a).

In Figur 1 taucht die Linse (3) mit ihrer konvexen Seite (4) durch eine Aufnahmeöffnung (24) eines paraboloidförmigen Aufhellreflektors (5) hindurch. Der Aufhellreflektor (5) grenzt mit dem Randbereich seiner Aufnahmeöffnung (24) an die konvexe Seite (4) der Linse (3) an und ist mit diesem Randbereich an dem Linsenhalter (8) befestigt. Die dem Reflektor (1) abgewandte Seite des Aufhellreflektors (5) ist eine Reflektionsfläche (6), die in jedem Radialschnitt eine paraboloidförmige Linie beschreibt. Der paraboloidförmige Aufhellreflektor (5) weist einen der Linse (3) zugeordneten Brennbereich auf, welcher im innerhalb und/oder außerhalb der Linse (3) angeordnet ist. Der paraboloidförmige Aufhellreflektor (5) weist mindestens eine optische Achse (23) auf, welche parallel zur optischen Achse (9) der Lichteinheit (15) verläuft.In Figure 1, the lens (3) with its convex side (4) dips through one Receiving opening (24) of a paraboloid-shaped brightening reflector (5). The The brightening reflector (5) borders on the edge area of its receiving opening (24) convex side (4) of the lens (3) and is with this edge area on the Lens holder (8) attached. The side of the reflector facing away from (1) Brightening reflector (5) is a reflection surface (6), which is a in each radial section paraboloidal line describes. The paraboloid-shaped brightening reflector (5) has a focal area assigned to the lens (3), which in the inside and / or is arranged outside the lens (3). The paraboloid-shaped brightening reflector (5) has at least one optical axis (23) which is parallel to the optical axis (9) of the light unit (15) runs.

Der in Figur 2 dargestellte Aufhellreflektor (5) umgibt die Linse (3) in einem Abstand und ist an dem nicht dargestellten Scheinwerfergehäuse befestigt. Die konvexe Seite (4) der Linse (3) weist eine Rauhigkeit im Microbereich auf Deshalb streuen Anteile des Lichts diffus nach außen, während andere Anteile in die Linse hinein total reflektieren, so daß diese auf der anderen Seite der Linse heraustreten. Diese von der Linse (3) abgelenkten Lichtanteile sind die auf die Reflektionsfläche (6) des Aufhellreflektors (5) auftretenden Lichtstrahlen (7), welche ein Nebenlichtbündel (13) erzeugen.The brightening reflector (5) shown in Figure 2 surrounds the lens (3) at a distance and is attached to the headlight housing, not shown. The convex Side (4) of the lens (3) has a roughness in the micro area Parts of the light diffuse outwards, while other parts enter the lens totally reflect so that they come out on the other side of the lens. This light components deflected by the lens (3) are those on the reflection surface (6) of the Lightening reflector (5) light rays (7), which a secondary light beam (13) produce.

Der in den Figuren 1 und 2 gezeigte Aufhellreflektor (5) ist so zu der Lichteinheit (15) ausgerichtet, daß sein Nebenlichtbündel (13) zumindest zum größten Teil oberhalb des Hauptlichtbündels (12) angeordnet ist. Die aus dem Aufhellreflektor (5) generierten Leuchtdichten erzeugen für den Gegenverkehr keine störende Blendung. Der Scheinwerfer weist für den Gegenverkehr ein angenehmes Erscheinungsbild auf, da nicht nur die Linse (3), sondern auch der die Linse (3) vollständig umgebende Aufhellreflektor (5) beleuchtet ist.The brightening reflector (5) shown in FIGS. 1 and 2 is thus to the light unit (15) aligned that its secondary light beam (13) at least for the most part is arranged above the main light beam (12). From the fill reflector (5) generated luminance levels do not create any disturbing effects for oncoming traffic Glare. The headlight shows a pleasant for the oncoming traffic Appearance, since not only the lens (3) but also the lens (3) completely surrounding fill-in reflector (5) is illuminated.

In Figur 2 ist auf der konvexen Seite (4) der Linse (3) eine Umfangslinie (8) dargestellt, durch welche optische Achsen (23) verlaufen, die zusammen einen Zylinder bilden, dessen Mittelachse mit der optischen Achse (9) der Lichteinheit (15) zusammenfällt. Die optischen Achsen (23) sind von den paraboloidförmigen Linien gebildet, die sich in radialen Schnitten durch den Aufhellreflektor (5) ergeben.In FIG. 2 there is a circumferential line (8) on the convex side (4) of the lens (3) shown, through which optical axes (23) run, which together a Form a cylinder whose central axis coincides with the optical axis (9) of the light unit (15) coincides. The optical axes (23) are from the paraboloid lines formed, which result in radial sections through the brightening reflector (5).

Der Aufhellreflektor (5) kann in eine große Sichtblende eines Scheinwerfers mit mehreren Lichteinheiten integriert sein. Solche Sichtblenden sind entweder am Scheinwerfergehäuse oder einer Abschlußscheibe befestigt. The brightening reflector (5) can be placed in a large screen of a headlight several light units can be integrated. Such screens are either on Headlight housing or a lens attached.

BezugszeichenReference numerals

11
Reflektorreflector
22nd
LichtquelleLight source
33rd
Linselens
44th
konvexe Seiteconvex side
55
AufhellreflektorBrightening reflector
66
ReflexionsflächeReflective surface
77
LichtstrahlenRays of light
88th
UmfangsliniePerimeter
99
optische Achseoptical axis
1010th
Neben-LichtfigurSecondary light figure
1111
Haupt-LichtfigurMain light figure
1212th
Haupt-LichtbündelMain bundle of light
1313
Neben-LichtbündelIn addition to light beams
1414
Blendecover
1515
LichteinheitLight unit
1616
Öffnungopening
1717th
FassungFrame
1818th
LinsenhalterLens holder
1919th
plane Seiteflat side
2020th
ReflexionsflächeReflective surface
2121
LichtstrahlenRays of light
2222
Hell-Dunkel-GrenzeCut-off line
2323
optische Achsenoptical axes
2424th
AufnahmeöffnungReceiving opening

Claims (14)

Scheinwerfer für Fahrzeuge mit einem schalenförmigen Reflektor (1), mit einer dem Reflektor (1) zugeordneten Lichtquelle (2), mit einer in dem Strahlengang des Reflektors (1) angeordneten Linse (3), welche das von dem Reflektor (1) reflektierte Licht sammelt und eine dem Reflektor (1) abgewandte konvexe Seite (4) aufweist, und mit einer die Linse (3) umgebenden Sichtblende, dadurch gekennzeichnet, daß die Sichtblende zusätzt ich ein Lichtstrahlen (7) der Lichtquelle (2) sammelnder Aufhellreflektor (5) ist, welcher vollständig die Linse (3) umgibt und einen der Linse (3) zugeordneten Brennbereich aufweist.Headlights for vehicles with a cup-shaped reflector (1), with a the reflector (1) assigned light source (2), with one in the beam path of the reflector (1) arranged lens (3), which from the reflector (1) collects reflected light and a convex side facing away from the reflector (1) (4), and with a lens surrounding the lens (3), thereby characterized that the screen I add a light beam (7) The light source (2) is a brightening reflector (5), which completely covers the lens (3) surrounds and has a focal area assigned to the lens (3). Scheinwerfer nach Anspruch 1, dadurch gekennzeichnet, daß der Aufhellreflektor (5) eine Reflexionsfläche (6) aufweist, die in jedem Radialschnitt eine paraboloidförmige Linie aufweist und von der Linse (3) abgelenkte Lichtstrahlen (7) sammelt.Headlight according to claim 1, characterized in that the Brightening reflector (5) has a reflection surface (6) in each Radial section has a paraboloidal line and from the lens (3) deflected light rays (7) collects. Scheinwerfer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Brennbereich des Aufhellreflektors (5) koaxial zur optischen Achse (9) der Linse (3) verläuft.Headlight according to claim 1 or 2, characterized in that the Focal area of the brightening reflector (5) coaxial to the optical axis (9) of the lens (3) runs. Scheinwerfer nach Anspruch 3, dadurch gekennzeichnet, daß der Brennbereich des Aufhellreflektors (5) ringförmig verläuft.Headlight according to claim 3, characterized in that the burning area of the brightening reflector (5) runs in a ring. Scheinwerfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Brennbereich des Aufhellreflektors (5) in einem Bereich der konvexen Seite (4) der Linse (3) verläuft.Headlight according to one of claims 1 to 4, characterized in that the focal area of the brightening reflector (5) in an area of the convex side (4) of the lens (3). Scheinwerfer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Linse (3) mit ihrer vorderen konvexen Seite (4) durch den Brennbereich des Aufhellreflektors (5) hindurchgeht. Headlight according to one of claims 1 to 5, characterized in that the lens (3) with its front convex side (4) through the focal area of the Brightening reflector (5) passes through. Scheinwerfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zumindest der größte Teil des Brennbereichs des Aufhellreflektors (5) im Inneren der Linse (3) angeordnet ist.Headlight according to one of claims 1 to 4, characterized in that at least most of the focal area of the brightening reflector (5) in the Inside the lens (3) is arranged. Scheinwerfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zumindest der größte Teil des Brennbereichs des Aufhellreflektors (5) außerhalb der Linse (3) und angrenzend zur konvexen vorderen Seite (4) der Linse (3) verläuft.Headlight according to one of claims 1 to 4, characterized in that at least most of the focal area of the brightening reflector (5) outside the lens (3) and adjacent to the convex front side (4) of the Lens (3) runs. Scheinwerfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Brennbereich auf der konvexen vorderen Seite (4) der Linse (3) liegt.Headlight according to one of claims 1 to 4, characterized in that the focal area is on the convex front side (4) of the lens (3). Scheinwerfer nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Aufhellreflektor (5) so gegenüber der Linse (3) und dem schalenförmigen Reflektor (1) angeordnet ist, daß die von dem Aufhellreflektor (5) reflektierten Lichtstrahlen (7), die aus der konvexen vorderen Seite (4) der Linse (3) austreten und auf den Aufhellreflektor (5) auftreffen, auf einer vor dem Scheinwerfer aufstellbaren Wand eine Neben - Lichtfigur (10) ergeben, die zumindest mit einem Bereich oberhalb einer Heildunkelgrenze einer abgeblendeten Haupt - Lichtfigur (11) liegt und der Umfeldaufhellung dient.Headlight according to one of claims 1 to 8, characterized in that the brightening reflector (5) compared to the lens (3) and the bowl-shaped The reflector (1) is arranged so that it is reflected by the brightening reflector (5) Light rays (7) emerging from the convex front side (4) of the lens (3) emerge and hit the filler reflector (5) on one in front of the Spotlights erectable wall result in a secondary light figure (10) at least with an area above a curative dark boundary dimmed main light figure (11) lies and serves to brighten the surroundings. Scheinwerfer nach Anspruch 9, dadurch gekennzeichnet, daß eine optische Achse des Aufhellreflektors (5) in einem spitzen Winkel zur optischen Achse (9) der Linse (3) und des schalenförmigen Reflektors (1) verläuft, wobei in Anbaulage des Scheinwerfers im Bereich seines Haupt-Lichtbündels (12) die optische Achse des Aufhellreflektors (5) oberhalb der optischen Achse (5) der Linse (3) und des schalenförmigen Reflektors (1) verläuft.Headlamp according to claim 9, characterized in that an optical Axis of the brightening reflector (5) at an acute angle to the optical axis (9) the lens (3) and the cup-shaped reflector (1), wherein in Mounting position of the headlamp in the area of its main light beam (12) optical axis of the brightening reflector (5) above the optical axis (5) of the Lens (3) and the cup-shaped reflector (1). Scheinwerfer nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Reflexionsfläche (6) des Aufhellreflektors (5) eine Lichtstrahlen (7) streuende Oberflächenstruktur aufweist. Headlight according to one of claims 1 to 10, characterized in that the reflection surface (6) of the brightening reflector (5) a light beam (7) has scattering surface structure. Scheinwerfer nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß der Aufhellreflektor (5) an ener den Reflektor (1) und Linse ((3)) aufweisenden Lichteinheit gehaltert ist.Headlight according to one of claims 1 to 11, characterized in that the brightening reflector (5) has the reflector (1) and lens ((3)) Light unit is supported. Scheinwerfer nach einem der Ansprüche 1. bis 11., dadurch gekennzeichnet, daß der Aufhellreflektor (5) an einem den Reflektor (1) und die Lnse (3) aufnehmenden Gehäuse gehaltert ist und die Linse (3) mit Abstand umgibt.Headlight according to one of claims 1 to 11, characterized in that that the brightening reflector (5) on the reflector (1) and the lens (3) receiving housing is mounted and surrounds the lens (3) at a distance.
EP20000109700 1999-05-10 2000-05-08 Vehicle headlamp Expired - Lifetime EP1052449B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999121511 DE19921511A1 (en) 1999-05-10 1999-05-10 Headlights for vehicles
DE19921511 1999-05-10

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EP1052449A3 EP1052449A3 (en) 2003-01-29
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EP (1) EP1052449B1 (en)
AT (1) ATE274673T1 (en)
DE (2) DE19921511A1 (en)
ES (1) ES2224958T3 (en)

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EP1422470A1 (en) * 2002-11-22 2004-05-26 Valeo Vision Headlamp for vehicle with enlarged lighting field
DE10306890A1 (en) * 2003-02-18 2004-08-26 Hella Kg Hueck & Co. Headlights for vehicles
EP3168528A1 (en) * 2015-11-11 2017-05-17 Stanley Electric Co., Ltd. Vehicle lighting fixture
EP2999920B1 (en) 2012-05-15 2018-10-03 Musco Corporation Apparatus, method, and system for independent aiming and cutoff steps in illuminating a target area
US10139069B2 (en) * 2014-12-24 2018-11-27 Shanghai Koito Automotive Lamp Co., Ltd Partially aluminized lens for automotive lamp

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DE4127403C2 (en) 1990-08-17 1994-02-24 Koito Mfg Co Ltd Motor vehicle headlights with a screen arrangement
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DE19704467A1 (en) 1997-02-06 1998-08-13 Bosch Gmbh Robert Automobile headlamp with complementary reflector

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1422470A1 (en) * 2002-11-22 2004-05-26 Valeo Vision Headlamp for vehicle with enlarged lighting field
FR2847656A1 (en) * 2002-11-22 2004-05-28 Valeo Vision PROJECTOR DEVICE WITH ENLARGED LIGHTING RANGE
DE10306890A1 (en) * 2003-02-18 2004-08-26 Hella Kg Hueck & Co. Headlights for vehicles
EP2999920B1 (en) 2012-05-15 2018-10-03 Musco Corporation Apparatus, method, and system for independent aiming and cutoff steps in illuminating a target area
US10139069B2 (en) * 2014-12-24 2018-11-27 Shanghai Koito Automotive Lamp Co., Ltd Partially aluminized lens for automotive lamp
EP3239601B1 (en) * 2014-12-24 2020-05-27 Hasco Vision Technology Co., Ltd. Partially aluminized lens for automotive lamp
EP3168528A1 (en) * 2015-11-11 2017-05-17 Stanley Electric Co., Ltd. Vehicle lighting fixture
US10352520B2 (en) 2015-11-11 2019-07-16 Stanley Electric Co., Ltd. Vehicle lighting fixture

Also Published As

Publication number Publication date
EP1052449B1 (en) 2004-08-25
DE19921511A1 (en) 2000-11-16
DE50007538D1 (en) 2004-09-30
EP1052449A3 (en) 2003-01-29
ES2224958T3 (en) 2005-03-16
ATE274673T1 (en) 2004-09-15

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